MANILA - Monsoon rains will dampen large swaths of the country on Thursday as the Angat Dam, which supplies water to Metro Manila, slid closer to its lowest ever level, the state weather bureau said Thursday.
The light to moderate monsoon rains may spawn floods and landslides in Metro Manila and the provinces of Zambales, Bataan, Tarlac, Pampanga, Bulacan, Cavite, Batangas, Mindoro and Palawan, said PAGASA.
Ilocos Region, Visayas, the rest of Central Luzon, Mimaropa and Calabarzon meanwhile will experience cloudy skies with scattered rains, said the weather agency.
Rains in the past few days have failed to replenish the supply in Angat Dam, which is located in Central Luzon, because the water was absorbed by the ground that was left very dry by summer's sweltering heat, National Water Resources Board Executive Director Sevillo David earlier said.
The dam's level has slid to the 158.15-meter mark as of 6 a.m., down from Wednesday's 158.40-meter elevation, according to the PAGASA website.
The Angat Dam this week may breach the record-low of 157.56 meters recorded in July 2010, when an El Niño phenomenon characterized by lack of rains gripped the country, David said Wednesday.
Water supply in Metro Manila was slashed to 36 cubic meters per second from 40 m³/s since the weekend due to the dam's declining level, the NWRB said. Some areas have since experienced rotational water supply outages.
On Wednesday evening, tropical depression Dodong left the Philippine area of responsibility after bringing rains that triggered floods in parts of the country.
PAGASA is monitoring a low pressure area east of Mindanao that was still too far to affect the country, said weather forecaster Ezra Bulquerin.